No reason not to shift, if I recall correctly MSF teaches that you SHOULD shift to first as you brake to a stop (To give you maximum acceleration capability to get out of the way should you see someone about to hit you from behind), but doing it while holding the clutch in, no need to engine brake at those speeds. As for lugging it in 2nd gear, no reason you cant slip it a little and ease it up to speed from 2nd gear if you dont quite come to a stop, just treat it like first gear and ease the clutch in/out to keep the engine rpm's where you want em.
2012 Pearl White XCT
Stage 1 tune, Stage 1 air filter, Ness Thunder Exhaust!
, Garmin GPS, Chrome Passenger Hand Rails, Lloyds Adjustable IAV, Isuck->Android adapter, WOLO Air Horn, Kicker Speakers
2009 Pearl Red V-Star 950