Well, I've had either a gear indicator or a Flight Deck on my last umpteen bikes and decided I couldn't live without on this one.

There were a couple cable length adjustments needed, basically to make the gear and rear brake cables remain in parallel for added support. The zip tie ensures the indicator is protected from sharp pulls to the side.

The indicator is perfectly visible from the saddle and it does not interfer with my top grip at all. Uses up no more handlebar space than a typical computer.

Done. No more looking back, under and through two sets of legs.