Older thread but hope you find my input useful!
I have the MT500 Jacket – the black one. I don’t find it runs particularly warm, in fact I find it quite breathable. You can open up the pit vents too, and the pockets for more venting if you really want. It seems decently waterproof, I’ve never had it get me soaked inside I don’t think, but I do keep it proofed as much as I can. It’s probably true to size, and kind of a boxy fit.
However, after 2 years, and not *that* much wear or washing, it has started to delaminate. The face fabric is getting crinkly in places as it separates from the membrane. So I suspect waterproofing will start to be affected before long! Not very happy about that.
Also – the main zip is SHOCKING. My mate has the same jacket and we both struggle to actually zip it up without catching it on the inner storm flap. It’s a total faff if you’re already cold up a mountain. Both of these issues are not really appropriate for what was a £200 jacket (though it’s permanently on sale seemingly).
It looks like they now have a new version out this year in a quite nice olive green colour (which won’t be the one on sale), with a much different material feel closer to Goretex Pro sort of jackets. From trying it on in the shop as well it seems to fit nicer for me, and the zip feels good too. But Alpine Bikes has it at £270 which is a ridiculous price for something that’s just gonna get dirty every ride.