I have the t3. Bought just for that packed length reason.
IMO, a little small for any base camp operation (I have a Redverz for that).
Couple downsides to the Gazelle design:
A) this is not a 4 weather tent in that the mesh ceiling willl hinder heat retention (note: have not tested this but a...
Make sure to consider the stowed & bagged length and how/where you plan to place it in your rig.
I went with the t3 as 1) this is not my base camp unit, 2) it's a slight bit shorter in the bag...can be stowed cross wise in the wife's Subaru.
That's not my story and I'm not sticking to it😎