doesnt the forward clickie not work with the 2 modes, ie you lose one mode?
Yup! But you only lose low mode, so it's not that big of a deal.
If your A9 is black, and you get the black forward clickie, it's not going to be a perfect match. But, the forward clickie designed to replace the reverse clickie on the A8/A9 is one of (if not the best) forward clickies I have ever found. This thing is designed, perfectly!
You can use it for momentary-on, and not worry about accidentally pushing the switch down all the way until it clicks on. It takes a very deliberate push to click it on. The only other forward clickie I've found that also works that way, is the one on my Brinkmann Maxfire LX.
You lose low mode, the ability to attach a lanyard, and the ability to tail stand the A9. But it's worth it, considering you get one of the best forward clickies ever designed.