Hello,
Sorry to poke my head in, but as someone who rides a jockey-shifted/suicide clutched bike with his 8-year old son on a daily basis I thought I might be able to help...
The item youngja refers to is known as a rocker clutch and they are available from some catalog shops like www.masclassics.com . Here's an example of a rocker clutch:
On my bike I converted the stock forward control shifter to a true suicide clutch (think of a clutch on a car: push on, let off) using a clutch cable I shortened, a trottle return spring, some ingenuity and half a dozen clutch adjustments to get it working smooth as butter. The shifter is made from a Hurst shift lever & knob I had laying around the garage; I even made a little shifter boot to add to the look.
As far as riding goes, I too read horror stories on the various V-Twin forums and so on. Really, it isn't THAT big of a deal. I have been a drag racer for over 15 years and I am used shifting my 10-second Buick down the 1/4 mile, and I wanted something to remind me of that hence I went for it. The first day was a little rough as far as 1st gear starts go, and I stalled a few times in traffic (the bike moved very little). Once I isolated the problem and relubed the cable, by Day 3 I was able to feather the pedal with my left foot and "creep" along in Southern California freeway traffic with no problem. As far as stopping, finding neutral doesn't take long at all, or I can rev-match and slip the bike out of 2nd and into neutral as I roll to a stop and not use the clutch pedal at all. I commute 20 miles one way to work daily in stop & go and freeway traffic, take my son to school & tae kwon do, etc., etc. Left hand u-turns are not an issue because of the "feathering" I can with the left foot. There is a good sized hill as I leave my house with an uphill left turn-- again, no problem, I just keep my forefinger on the front brake. I have made one panic stop and just let the bike die. I've lost my "suicide lean" balance only once when I put my left foot down when I had the pedal down and my finger on the front brake-- POONK! A quick stall & I had refired within a few seconds.
Once you get the hang of it, it really is a blast as it greatly augments the "man & machine" invovement factor. Some of the looks I get when at the hangouts are priceless, people seem amazed I ride the thing every day and that it isn't a weekend or bar-hopping bike. Not so! I have received appreciative comments from way-old school guys, and at some point I want to try and adapt a police-style tank shifter to my bike. While I like the look of a true "behind the leg" jockey shifter, I have extended footpegs for my son's feet which put his left foot uncomfortably close to where he could kick the bike out of gear without realizing it, hence the route I took.
At any rate, thanks for letting me contribute, I hope this helped. If you have any other questions, please let me know.

