This thread interests me as my GF wants to replace her GS 650 twin with a Tiger. Right now, even with the seat in the lower position, the roadie is still too tall.
Also, I would be concerned about the front fender clearance when lowered. I've seen broken fenders that strike the underneath surface of the lower triple clamp when bottomed. Usually, the front brake lines get caught up in the tire and lock it, causing a crash.