Ditto on having a WRR and an ST on order. They'll make good bookends. I've always tried to keep a few bikes in the garage that have a wide enough spread of capabilities that there isn't too much overlap. The WRR is so good, I had to go biiiig to do that in this case. The middleweight dual sports were too close.
I'll be riding the ST on some tough trails. No single track, but we have plenty of mountain trails with loose steeps. Besides my usual riding buddies, I ride with a riders of a large variety of skill levels. I'll be using the ST on trails to slow down my pace and challenge me at that slower pace. That will eliminate the rubber band riding (ride ahead, wait, ride ahead, wait) pace when out with riders that like, or are more comfortable at, a slower pace.
I'll be putting on knobbies after I break it in and will be testing the ABS to it's limits. I'll be proving to myself if it is more controllable and easier to handle with the ABS on or off (testing it by doing the 2nd gear disable trick). Then I'll know whats right for me. If I do wire up an ABS disable switch, I will do it so there is a bright LED staring me in face while it's disabled. That way I won't forget it after the decent is complete. I'm fairly sure I won't need it or do it, but will not know until I do the back-to-back descents with ABS on and off.