Wow, who'd expect these posts. In response:

So why'd you buy leather bar tape? - Never again, but it does look nice right now.

Why not shellac your leather seat? - I don't ride naked, if I did I might try shellac; which would help with stains I'm guessing.

Shellac is slippery yo! - No it's not, yo. It has fine grippy texture, just enough to keep from sliding, so far.

How to apply safely? - It couldn't be easier, I do block tape at the end, mid bar...I like a clean edge. But drips on the bike are rare and will come off with a little rubbing alcohol. Shellacing cloth is harder because it's so thin, it tends to make little drip mounds and other problems as it dries. Leather just soaks it in and goes hard. I did my fixed gear with weaved cloth, it took some 6-7 coats to get right.

Doesn't work on flexible material! - There is nothing soft and flexible about Brooks leather bar tape, not once it sets into position. Rock hard.

So match that saddle! Surprisingly, the color ends up damn close to the saddle. Accidents happen.