Hi - I’m new here, but I have used the SG M7 in a few different places the past year or so. Full transparency, I have no clue about the FL pants, so this may be a bit bias. I’ve used the M7’s at home here in AK on a 10 day Moose hunt (which was a wet one), an October Caribou hunt up in Atigun Pass area (Snowy, cold, windy, lots of on foot movements), and then I used them in Arizona on a mule/cous deer hunt in which I rained a ton and dropped below freezing a few nights out in desert. — below are my findings, all personal preference of course:
The pros: They are waterproof, they are decently warm for the fleece backer (not as warm as a puffy pant though), the large hip vents are amazing when you need them, they seemed to naturally ventilate better than expected for a waterproof pant.
The cons: full transparency - I’m an MMA athlete, I have big claves/legs/glutes with a 32” waist, finding proper fit is a nightmare for me, I always size up, SG has typically been the only company to actually accommodate my fit dilemma - I wear a size large in the de havilland pants (which are the best imo) and I bought the M7’s in the same size since SG advertises that their gear is pre-fit for layering accommodations, I found that to be 50% true, the belt line on the M7’s is larger, however the quads/glutes area is not at all larger, in fact they feel even tighter than the de havillands …… I think that’s given that the M7’s have a “mechanical stretch”. This made the break-in process a little bit annoying. “Mechanical stretch” is not my favorite, the de havillands have a great stretchy fabric, the M7’s are much more ridged and less mobile, and as such I realized that wearing a belt is the only way to keep them from falling down if I bend over/kneeling/etc. Something to bear in mind is that the M7’s are meant to be worn as a primary pant (not like the M5’s) so, if you prefer more stretch in your primary pants, the M7 might not be the right choice.
Bottom line: Do they work? Yes. - Are they comfy? Maybe like a 6/10 - Should you go a size up if you’re needing to layer? YES. - Are they worth the $300+ price tag? I don’t think so. - Will I use mine again in hunts this season? Likely No, I’d rather layer comfortably and pack my rain gear/puffy pants.
All in all, too me, the M7’s are a little disappointing in comparison to other SG gear. Maybe I received a pair that were janky on the assembly line, but given the price tag, that should NEVER be the case.