Hi Randy,
It is 7-8 oz and seams to work well. The IWB I added a reinforcement due to thinner leather of 5-6 on the outside and 6-7 on the inside. Ideally for this weight of a gun 6-7 or 7-8 would be better than no reinforcement is necessary.
The marbling effect is due to different densities in the leather and using water based dyes. It is a nice look and people seem to like it.
Regis,
The clip is straight and this has worked well and makes it easy to assemble and very secure in practice.
All,
The color is Bison Brown and the holsters were dipped and then wiped off right away after 5 seconds in the mixture. The both are actually darker than the pics due to messing with the light % for the pics to show up well.