while i'm far from an expert on the subject, i think people get too caught up in the on-paper mechanics and spend too much time dwelling over "numbers." i've ridden my V with and without luggage. loaded heavy and empty. and honestly, aside from being slightly more nimble, i discern no real difference. i've never felt that the V is such an outstandingly nimble machine to begin with. face it, i doubt suzuki spent any time tweaking handling, COG, etc. on this bin bike.
i don't doubt that panniers and top cases change the COG. i just don't think it makes a damn bit of real world difference. moto riders have been loading and overloading their rides and have traveled in places 99% of us will never see in person, let alone ride to. they clearly did it, some several times, with higher COG's on all sorts of bikes.
buy it. farkle it. ride it.
'08 DR650, '07 DL1000
"And anyways, if they don't have motorcycles in heaven, I'd rather go to hell. I'm pretty sure they will have loads of them there." (deelip, 2016)