I became very interested in the BSI Revolution when my wife and I realized the mods we wanted to make to adapt the Tarptent Scarp 2, primarily to extend the fly, would be way too costly to be practical, and when BSI confirmed they could get us a tent by end of July (had read about past availability problems). That said, the Scarp 2 is an excellent tent and Tarptent is a great company - we just want a fly that we can snug down when necessary.
We were initially interested in the BSI Convertible 2P or 3P for the extra durability and ability to extend to winter, but Bob at BSI said they won't be available until this coming winter at the earliest. That's fine, because the lighter Revolution 2P or 3P should work very well as our main 3 season tent, and we do have a dedicated winter tent (Allak) that's probably only 2 lbs heavier than the new BSI Convertible will be. We like the porch not only for the convenience but also because the added pole adds some strength.
Interested in any feedback anyone can offer on the Revolution 2P Porch model versus 3P Porch model - looks like there's only a difference of 3 ounces between the two. The 3P just includes the vestibules inside the tent, and has a floor that can be pulled back to create floorless area, or pulled out and staked to create floored area in the vestibules. I think that's the only difference between the models. Bob said they should be equally stable.
Leaning towards the 3P not only for the extra space and ability to use for more people, but also because it can "grow" with us = roomy enough to use for 2 adults + small child.
Besides carrying an extra 3 ounces for the extra space, can anyone think of a reason not to go for the 3P over the 2P?