Anyone fitted Gotoh 510 tuners on a Les paul ?

I see that Gotoh now have a button option (A20) which is similar / identical to a Grover button, so aesthetically these tuners should look fine on a LP.

I have a 21:1 ratio set on an acoustic guitar and find them to be an excellent tuner; very precise, no "gear lash", micro adjustment performance.

http://g-gotoh.com/international/product/sgl510z.html

interested to hear from players who have installed them. Easy to install ?