Given the Mossberg's safety location, you'd have the same issues with the SpecOps- your thumb will need to come out from around the grip in order to take the safety off.
However, let's assume that you deactivate the safety the moment you pick the thing up; I'm not one to put much stock into a shotgun's safety anyway.
I admit I haven't used a Talon, but I do have a 870 with the SpecOps. Having looked over the Talon on the net, it looks like it might provide a better cheek weld than the M4 style SpecOps, but it will do so at the cost of length of pull. While I know most tactical style stocks are shorter for those wearing body armor, all my kevlar vests are at the cleaners. I tend to prefer a longer LOP (about 15"), so the 13.75" of the Talon would leave me feeling cramped. On the SpecOps, you can adjust it.
For HD purposes, cheek weld would seem to me to be less an issue (it becomes a problem when shooting clays, because an inconsistent weld is one that costs you birds) than a natural fit- being a couple inches off inside 15 yards won't mean a thing with 00 buck. Just my $0.02 though.