Well I asked both questions. He said he's not asked hardly about Sliders, but did commend Tracy Torme, and said he was bummed at the time about not being asked to stay on. A bit heartbroken. As for hanging together, he didn't recall but that most of the film industry would hit up the Sutton Hotel and a few other spots Friday/Saturday night all the time. Very nice guy, I'll post a pic later on.
What I would say in general is that most guest stars on the show remember it fondly, and that they're often still intrigued by the concept. Nick, same as even Jeffrey Dean Morgan, is surprised it hasn't been rebooted yet.