L&Schickens, what is your goal with your rosecombs? Are you trying to breed blacks or another color?
Personally I would NOT breed brown red or BBred into a black line unless I was looking to make improvements in type to the brown reds or BBreeds. It takes generations to perfect either color after such a cross as you'll have loads of red turning up in your blacks, and too little color coming out in your colored birds.
He's a decent, average rooster. He does not seem to have white in his face which is excellent as that can be a real pain to work out of a bloodline. His earlobes however are not round either, but might get compensated for from your hens. I'm a little concerned about the shape of his spike though....it looks like it is tending toward blade shaped (can't tell for sure from the pic) and the additional points at the base of the spike are a no-no. His comb sits really nicely on his head though and the spike is at an excellent angle off from the rest of the comb, and the size is perfect, not too big and not too small.
He doesn't hold his tail too high which is good, but he has a sharp junction between the line of his back and the tail. This is the same in the pic from Katherines site. The angle between the tail and the back makes a V, instead of a U.
Here is a pic of a really nice hen and roo that have fantastic back lines:
This guy of msbear has a really nice back:
Your fella carries his wings very well, not too low which you see a lot of. How old is he? He could have a more prominent chest, but that may develop with age if he is young.
You'll certainly have some interesting chicks from the cross.
UC