I use 2 pumps (24/7) and 2 sites. Getting used to wearing a second pump was extremely minor, a few adjustments. I was very slow (7 months) and methodical integrating the symlim. With no information to go by it was the safest and most prudent way to go for me, as I live alone and have no one to rescue me. Looking back, for anyone else at this point, it can be achieved much quicker.
For me I have realized some major benefits from it, my general feeling of well being is off the charts tremendous, my insulin sensitivity has improved greatly, from 6/1 to 22/1 on a normal not very active day to over twice that on a fairly active day.
When I started, my goal was to equalize the Insulin and Symlin that I take. The basal rates are a mirror of one another. The boluses turned out a little different, the reason for me was, I did not want it to be complicated as that was the direction it was headed.
My symlin bolus is different than the insulin as I bolus the dose all at one time. As an example for breakfast,
36g carbs, Insulin = 1.6 units (.2 up front and 1.4 over 30 minutes),
Symlin = 1.5 units all at once (up until 6 months ago when they discontinued the vials and the strength changed by 40%, it was 2.5units)
I use Medtronic pumps and have bolus wizard settings set up in both for different times of the day. These are just for normal days, any extra physical activity changes everything.