Hi notturtle,
I certainly dont think that contrast is a problem. It can be controlled both in development and in post-processing. I've certainly never had a problem with it. In fact, I have increased the contrast (via tone curve adjustments, not direct contrast adjustments) in someof my photos. That may have something to do with my choice of developer though - supposedly diafine leads to flat negs. At any rate, I have never had to decrease contrast. 🙂
Congratulations on your purchase! I am sure that you will enjoy the lens. I look forward to reading your comparison.