Anyone tried any of the 37mm thread Sony wide angle adapters on the HF10 yet? The stores around here have all kinds of Sony accessories in stock, but none have Canon... Just curious...

I haven't but I compared the specifications and found the Sony lens remarkably similar to the WD-H37C (same number of elements).

I did test the WD-H37C and found works perfect at wide-end but bad CA at full tele. I also have a WD-H43 which outperforms the WD-H37C easily at full tele (using a step-up ring). But the lens is expensive and very heavy (and I can't tell for sure if it could damage the ring over time).