Lowering the bike has all sorts of hidden unintended consequences....
Agreed. Such as: lowering clearance, changing the handling, making the center stand difficult, forcing replacement of the kickstand, and reducing suspension travel.
But not lowering it has various ones too. Like: dropping the bike in a parking lot, not being able to back it out of a parking space, not being able to prevent a slow tight turn fallover, being very uncomfortable at every stop, tip overs at stops, having difficultly getting on, etc.
I would NOT recommend lowering unless lowering the seat and wearing taller boots is still not enough. And that was exactly my situation. No other bike in the C14 class/type is much lower, so the occasional comments about "the Concours is not for everyone" are also insulting and invalid (not claiming you did this, just a preemptive declaration) and I will have no bike before having a slow, loud, poor handling,low-tech "cruiser".