9 spd Cassette 11-40/42

[Mook]

Hi all,

Does anybody have experience with a 9spd wide range cassette?

I have 2x9 brifters and RD. My gravel build will start off as a 2x or 1x 9. The FD mech will provide a challenge since road FD's are generally bottom-pull and  my frame is a top-pull MTB setup.

I have done the pulley routine in the past to pair a bottom-pull FD with a top-pull frame, but I want to try a 1x this time around.

Is it worth it? My aim is to comfortably reach a top end of 40, yet not have to push my bike up Suikerbossie or Du Toits.

What are your views on a 34/11-40 if in fact it's worth doing it?

Thx, appreciated