Not using a tank bag, but I would recommend the Rev'it! Rockefeller jeans. It's probably their "safest" jeans, with their branded thin and flexible protectors by standard in the knee and hip pockets. It also has Kevlar all throughout the jeans (which is rare) and some kind of strong fibre used for the denim. I use it the whole year around. The only downside is that it's a bit heavy and thick. So for very warm weather riding I would suggest to look elsewhere. Also important to know is that it has a 'regular' fit, so it's not as tight as most of the jeans I've seen so far. But it's very comfy. :-)

Absolutely.... 

I do like the look the genuine kawasaki slightly taller (100mm) screen provides, but wondering where this channels the wind - chest/face?

Fitted my kawasaki high rise seat today.. very impressed..