Hi Hermes,
I guess that I sit squarely on my saddle. I had a Retul fit on my road and TT bike in May 2009 and how I sat on my saddle never came up in conversation. The 8-1/2 hour session confirmed that my road bike position was good and I ended up with major changes in my TT position (no surprise). The whole experience which included cleat fittings on two pairs of shoes and spin analysis was well worth the time and expense.
Here is a shot of me "wired up" on my TT bike with the spin analysis running on the monitor in front of me:
