been on dynafits for close to 20yrs. I just can't imagine touring on frame bindings now. tried og guardians. so heavy and pivot placement makes them much worse. the ski I use most(praxis gpo) I have mounted with Solomon sth14(rebadged atomic ffg) alpine clamps mounted on cast touring system. I've toured on them only about 10 days in the 2 yrs ive had them(I have dedicated touring skis w dynafits). cast works really well and I've had no issues(probably 60+ days on the hill). looks like tyrolia attack toepieces are good for thicker soles as well. they usually have summer sales too
after one of my barons broke in december I picked up a used set of skis with sth/cast and transferred it to my lib techs, such a rad setup. I normally ski a lot of fairly aggressive inbounds before a bit of slack country, so tech was a non-starter for me. been out a few times on the cast and love it for what I need. will likely get tech bindings for my other pair of skis for full on touring however…the stride is a hell of a lot better than frame bindings for sure, but yeah, not interested in ever skiing them in bounds semi-regularly.