A buddy and I are going to be spending about 7 days on the Emmons side/Camp Curtis area this June conducting glacier "research" (grad school side project stuff). Probably will wrap up with a summit shot. We'll have to make two trips to haul food and separate science gear to our camp from the parking lot. I own some Scarpa Triolet singles and my go-to Invernos. I reaallly don't want to have to make the back and forth turnarounds in the doubles, and I'm not sure I'll have room to strap them on my pack. Could always carry them in hand though.
Anyone worn Triolets or similar up Rainier in early summer that can comment on the warmth? As far as I've gathered they're a less warm sibling to Mont Blancs/Nepals, I couldn't find any insulation specs online. Colors aside, they look identical to the newer model of Scarpa Manta boots. I wore them up the Easton on Baker last July and my feet did get a bit frosty at pre-sunrise breaks. The coin toss is that I don't want to be stuck with boots of inferior warmth for a week, nor do I want to be doing approach repeats in double plastics. I've only ever worn my Invernos on Rainier.
Thanks y'all.