That was a new personal first, but at least I learned a Fusion with Tilos underwear is still more than warm enough for a 60 minute dive in NFL even when everything squishes.
Having done almost an entire week of squishy cave diving in November, I can drink to this!
There is definitely a She-P learning curve, and I have yet to figure out how to use it for a whole warm day in MX without the back coming loose. But even when it doesn't work perfectly, it is SOOOOO much better than not having one!