No More Ikari-style joysticks??

SlickStick said those joysticks used in games like Time Warriors, Ikari Warriors, Caliber 50 (I think), Midnight Resistance, Front Line, etc...are no longer being made. I was hoping to order from them and get a pair of rotating joysticks in there.
I recall a year ago hitting the board here (which, by the way, is awesome) and seeing that most folks hadn't tinkered with those joysticks because nobody could figure out exactly how to interface them with a PC. ie: is it part spinner, part joystick?
Anyhow.........I guess thosejoysticks are no longer made? I was wondering if anyone had come up with a good solution to that particular problem...
I suppose if you had a spinner and a trigger-grip joystick or something you could play 1 player.........and if you had a trackball another player could use that as a turning device....that is.....I guess......maybe.....??
Anyone?