I've been riding this frame for 5 years now. Interestingly, it's the only frame I've ever won anything on. For all the money I've dumped into my nice road bike, only my Nashbar frame on "adventure races" and even one cross race has ever put me on the podium.
All of my comments on the cranks are for Shimano HTII two-piece cranks with a road outboard bearing bottom bracket. 170mm arms.
With a double, my right crankarm just clipped the chainstay under effort. Just enough to make a slight "ping" sound that took me a day to figure out. (On the stand it didn't do it...) I put a slim 1.5mm or 2mm spacer (can't remember right now) behind the right cup and it centered up perfectly.
A road triple (30-39-50) fits perfectly, like it was made for it.
I tried a MTB triple once, but couldn't get the road front mech to swing far enough for the 50mm chainline. That isn't a frame issue, but a mech issue. And you can't use a front MTB mech with road shifters.
This frame has been my do-it-all commuter/adventure racer/gravel grinder/beer fetching bike.
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Good night...and good luck