Those are new rods so I haven't physically seen one yet. However, since they are 11ft, they are slightly heavier than other 2 and 3 weight trout speys, but with those two rods you're at looking at from 180 to at most 270 grains. So, I can't see why any any standard, large arbor single-hand six-weight reel wouldn't work on them (i.e. don't go for superlight reels like Sage Click, or standard arbor singlehand reels like Orvis Battenkill). Can't see any reason to bump up to a 7 or 8 weight reel. You're fortunate that each brand's lower models probably fit better than their more expensive lightweight reels. Go "efficient" and try an old Pflueger 1495 1/2.
I thought about getting one of these in 3 or 4 weight but went for something else. I'm really curious as to how you end up liking this rod.