At first I was going to congratulate you for scoring that Lobo cover ! (which was adamantly not for sale), then I realized where you are going.
I'm a Bisley fan, mostly because of nostalgia and how I liked the original Lobo miniseries.
Almost all artists evolve. Byrne, Sienkz, JR JR, all their art changes with time. Some people like their earlier stuff, some people like their later stuff, to each their own.
I wouldn't call his change a decline. It's just a change. But that is obviously my opinion.
Malvin