I think it's cool. Double bass pedals allow a drummer to play more complex grooves, fills and patterns. I could understand if one is not efficient with it and cats not wanting to play with him or her, but that just means that you have to stay on your grind and shed before you try to pull your stuff out.
I play mostly with a single pedal, but I'm studying to improve my double bass playing. I know I'm not even taking that pedal with me to a gig until I'm confident with it. We don't go on a gig to pratice, we perform &/ or minister. And you know, It doesn't matter if you can play... double stroke rolls and crazy stuff with your feet unless you can use it tastefully in the context of what ever your playing.
(Shout out to my dog, S. Harris at Willy P., putting me on to this site)