Been running a Gennie Shifter in my 32 for the last 5-6 years.

Trouble free.

I like it because you can run any knob you want, but more importantly you don't have to screw around with a button to select gears.

The Gennie Shifter is intuitive in that it operates much like a column shifter.

Gear selection with the Gennie is easy, all you do is pull the shift lever to the left to get out of park or into reverse, low or second.

That said, I like the Lokar mounting bracket better.
Easier fore and aft orientation although the Gennie bracket puts the shifter in the right place for most cars.

My friend runs the short Gennie in his 29 roadster and it's easy to drive.
I have the 23" tall one and it's even easier.