Has anyone experience with the Invance Male Sling for incontinence?  

I am 68 now, and 2 years after RP surgery, and PSA is undetectable now,
which is good.  Incontinence varies with days and activity, sometimes
light, but sometimes heavy.  I call it one pad per day, but I cut them
in half, and it is usually two halves per day.  The pads are often
light, but with plenty of surprises, and quite necessary.  I think it
may be be getting a bit worse.   But manageable I guess, I'm used to it
now.

My urologist/surgeon wants to do this new sling thing, and says it has
great success, and assured me of no side effects.  I do trust him, and
would like some improvement, but find that I am a little hesitant about
more messing around down there.  :)  I believe the surgery to be
relatively minor, one night in the hospital, and have heard about
sitting discomfort for awhile, but my only concern is about long term
after effects.

The doctor just introduced this and said to go read up on it first.  It
was a new concept to me, and I wish I had thought of these questions
then, at the first visit. The best info I find online is with simple
Google search for keywords:    sling prostate    Not really much info.  

My understanding is that this sling acts as a clamp to squeeze the
urethra tube, to prevent the draining, and that it is particularly
effective at this.   But if it squeezes, and is tested with 60cm water
pressure, then how does one urinate?  Making this up, but do you have to
wait for full bladder pressure to start it?   I had blockage problems
immediately after surgery, and had to be dilated several times, and am
very leery about urination problems now. :)  

And what is the effect of all that squeezing several years out?  
Anything like permanent urethra damage?  Is this what is meant by
urethral erosion?  I'm thinking it is new enough they may not know about
long term.  

The numbers that I think I read say it is extremely effective for like
40%, very helpful for 40% more, not much help for 10%, and causes
problems for 10%.  10% harm seems rather high, not quite the same as no
side effects.  

But it would seem if the odds are so good, then why not?   Nothing is
decided yet, and I am in no hurry.  I still have to do a cystoscopy, to
verify if I am suitable for this.  

I would appreciate any comments from people with experience with this.