G'day Sonya,

Yes, they can, the quilts will obviously just be a bit offset from one another due to the difference in length.
Hope that helps.

G'day John,

The Ember uses a much higher loft goose down, which means it is a lot more compressible and will have a smaller pack size and volume for the warmth and fill weight.
The Cinder has the NanoShell fabric, which is the key difference between the two, although both have UltraDry down which is a water repellency on the down itself.  The lower loft means it packs slightly larger.
The Cinder may probably be the better option for tarp shelter adventures. 

G'day Alison,

The Spark is a relatively restrictive bag in its tapered mummy shape, and cannot be opened out if you wanted to use it as a blanket.  The Ember has abit more versatility in that it can be coupled or wrapped around a mat, but its also still a functional quilt.
If you consider yourself a normal sleeper, you'd aim to get a bag or quilt with a comfort rating of 5*c lower than the temperatures you expect to be in...if you are a cold sleeper, you'd aim for 10*c lower.
The average nighttime temp on the Camino in June is 12-14 degrees, so I'd aim for a 7-9 degree comfort rating at the absolute minimum.
It also depends on what sleeping mat you are using, or if you are staying in hostels.  The other thing to consider is if you intend to use it at other times in your life or if its only going to be something you use on this trip. A couple of hundred dollars is a reasonable investment, so if its a bag or quilt that you might use for other things, it could be good to look at options that will cover a range of situations.

I'm not sure if that information clarifies anything, but if you'd love to have more of a chat and nail down the best option, please feel free to give us a buzz on 1300 914 007.

G'day Jayden,

I would definately be opting for the Sea to Summit Ember Quilt Eb2 with this situation.  
Ideally you should be aiming for a bag/quilt that has a comfort rating of 5 degrees colder than the lowest temps you expect to be using it in, or 10 degrees colder if you are a cold sleeper.  Essentially the Eb1 will really only cover you for nights of 15-20 degrees based on that recommendation, and it's always best practice to NOT rely on a liner for additional warmth - and thats from personal experience (unfortunately!).
The Eb2 will give you good practical comfort for the adventures you have planned.
Hope that helps!

G'day Lea,

The general rule of thumb for sleeping bags/quilts is to work off a comfort rating of 5°c lower than the coldest average temp you expect to be sleeping in.  If you consider yourself a cold sleeper, bump the buffer to 10°c lower.
Essentially a sleeping bag or quilt with a 5-10 comfort rating is similar to using a bedsheet or a lite blanket.
The Sea to Summit Eb1 Quilt would be recommended for temperatures of 15°c and above, and therefore is only suitable for summer adventures only.

G'day Toni,

The Ember sleeping bag range doesn't have zippers so you won't be able to zip them together, but they do have press studs and you can press stud together two Ember quilts to make a double. The Eb1 Quilt has a comfort temperature of 10'C so you'll be quite cold at 0 degrees with this option. We'd suggest looking at the Eb2 (2'C) or Eb3 (-4'C) to be warm and comfortable down to 0 degrees.

G'day Heath,

The new 2019 models of the Ember Eb1 Quilt are a lighter grey colour. The main way to tell the models apart is their technical specs, the new version has 850 Loft down and a 10 denier outer material. The old model had 750 Loft down and 15 denier outer material. Overall they're the same great bag, with slightly lighter materials, and a slightly different shape which will give you more room at the hip and foot.