I have had one installed in my new Avalon A335, and it has taken me a week of messing with the tone controls in the preamp, and adjusting the blend of mic and pickup to get a good sound. I'd say in total it's taken about 5 hours of solid adjustments (play, listen back, adjust tone controls, and repeat).
I must say though that now it is right, it sounds excellent when recorded.
And as for the guitar - WOW - I'll try and post some pictures, I should have some spare time now I've got the pickup sorted!! It has the most beautiful tone, and it plays like a dream. I removed the shims from under the saddle and it could not be more perfect in terms of action. The cedar soundboard is really quite dark, and with the walnut body it looks something else.
I honestly believe it is the best guitar in the world (I would though!!).

