Our coach came with a Sanicon system - and we've always used it. When we're at a full hook up site - I simply wait until it's time to dump - open the wet bay, extend the Sanicon hose to the sewer connection - and dump. When the dump is done - I screw the "bottle cap" back onto the Sanicon fixture and put it away till next time. It's usually time to repeat the process in 3-4 days.
I have given some thought to disconnecting hose to the Sanicon - and trying a gravity dump using the typical large hose. I'm guessing it would like shave a little time off what it takes me now using the Sanicon ... but, then I think about having to deal with unhooking the Sanicon hose (and the effluent that I'll no doubt have to deal with the moment that I unhook it) ... then having to deal with the finding somewhere for the large sewer hose, etc. ... and the 10-15 minutes I spend waiting for a Sanicon dump cycle to complete starts sounding pretty good again ... and the thoughts of trying out a "gravity dump" pretty much disappear.
It ain't broke - so I ain't going to try to fix it!