as far as i know, the field doesn't have a website.
as for ease of swapping out q between guns, it's really easy if you have more than one mounting socket, if not, it's not as easy. especially with hose lengths needing to be pretty specific for how you set it up. If you want to use it on more than one gun, i highly reccomend picking up multiple CMS units so that you can LEAVE each gun set up, and just swap pods.
I only have one gun, so it's not as much of an issue, plus i almost never use the q. throws off the balance too much for most of the playing i do. i run SC feed 99% of the time.