I saw him and Avery Brooks in Chicago last year. Avery Brooks shook my hand, tried to remember my name from when I got my autograph from him earlier in the day (he didn't, but credit to him for recognizing me and trying) and when we took the picture, we have our arms wrapped around each other like old buddies. Shatner didn't speak to me, wouldn't shake my hand, and almost cringed when I got my picture taken with him and put my hand on his shoulder.
That said, the line for Avery Brooks was maybe 25-50 people long. For Shatner, it had to be about 500 people long. I don't think Creation cares how he acts when he's bringing in cash like that.