Welp, I rode 5 miles to warm it up, changed the oil and filter, removed the 50+ acorns from the air filter, washed and waxed, cleaned and lubed the chain, and went for a ride. I like the bike a lot. It's a little buzzy at certain RPMs compared to the st or my departed Buell, but not offensive. Very lightweight feeling and comfortable. I couldn't help but feeling that it didn't feel "naked" with the windscreen on there, so I took it off when I got home.
I decided to cut through town and see what was going on, which I realized while doing it means this was the right bike. It's easy going, comfy, and maneuverable. My Buell was amazing at knee dragging, but actually quite awkward at in town speeds. I only rode it to go too fast, where the hornet has the same cheery disposition as the st1300. It encouraged me to potter around and sightsee, where I wouldn't have on the Firebolt.
The 919 fuels perfectly, better than the ST13. There is no drive line lash. Handling is super light, which is a bit of an adjustment for me from either the Buell or 1300. At high speeds it's very nice, but under 40 or so it likes to fall in a little.
*The bike came wearing a 60% tread or so pilot power 3 front, and an almost new pilot road 4 rear, however they are 9 years old. I suspect some of the falling in is from the SS front tire. I don't know if I will be able to trust decade old tires, so I'll probably end up spooning on a set of new ones. (road 5? T31? Roadtecs?) Tire prices seem to be up 50% from last year.
The bike has a kind of tall first gear, and a kind of short sixth. It's not really problematic, as it will start easily without throttle in 1st, right off a 1000 rpm idle. The st will idle along at three or so mph in 1st, where the cb gets up to about six or seven. The 919 runs 1000rpm or so higher at any given speed in top gear. It also has strong roll on performance. It will roll up a lot of speed, even in sixth. I never got leaned way over, because I'm a little suspicious of the old tires. I've never had a stability issue with my ST 1300, even up to 140 or so mph indicated, but the 919 feels inherently more stable at high speeds. (I try to keep it well under the triple digits).
I tried to keep both tires on the ground, but the 919 will definitely wheelie first on throttle, and will do the same in second over bumps and dips.
Only maybe 25 or 30 miles so far, but no regrets.
I'll update when I get a few more miles on. Very happy so far. Also, bought it from a nice guy, for a good price ($3,600 with 12k miles, pretty fair I think).