I've got one. I've even made a trash can lid seperator dealy bob to make it a 2 stage whatever you call it.
But I have to admit, Since it hasn't been plumbed in, I never really use it for anything other than when I use my planer.
I know I should use it when I use the table saw or cut off saw, but moving the hose is too big of a pain.
But no more.
Today I bought some 4" drain pipe and through some creative use of flex hose fittings, hot glue, some newly purchased blast gates, and the aforementioned flex hose, I cobbled together a psuedo plumbed dust collector system.
I know, no pics, didn't happen. The shop is still an unorganized mess, but at least now when I use the table saw I have half a chance of using the DC...
I plumbed a connection to the old radial arm saw, the table saw, and one free hanging hose I can use to connect to the planer, bandsaw, drum sander, whatever I happen to need. Those latter tools are ones that have to be moved into position to use, so they don't need a dedicated connection.
Now If I can just get the electricition out to upgrade the house panel and run me a sub panel, I'll be all set.