It'll easily handle your 180W motor, since the 36V version is rated at 612W (36V x 17A). A quick google found nothing related except from that same website. Perhaps they've re-branded it.
As for reverse, I would hazard not. These controllers are presumably for Trikkes, which, at 46 pounds including battery, you should be able to lift and turn without too much difficulty. I doubt reverse is a big issue in Trikkeworld. Best thing is to contact the retailer and ask him (i'm so clever some days
).
Have to say, that little Trikky thingy looks like a blast. But at $2200? Really?