It's been more than a few years ago since I shot a friend's 1006, but I'll give my impressions.
It's a BIG, HEAVY gun! It's pretty much a big chunk of solid stainless steel and feels it. I have big hands (I am able to comfortably hold and shoot an old, 2nd Gen pre-SF Glock 21) so the 1006 felt very good to me. The gun had the curved back strap and fit me very well. The DA trigger was pretty good, SA was great and it was accurate as all get out. My friend held back some old, full power Norma 10mm ammo for me to shoot and, while it was HOT, the gun handled it very well. Comfortable to shoot and, while my follow up shots weren't anywhere near what they were with the 9mm Sig P226 I was shooting, they were good for that gun/caliber combo. I loved it so much that, every time I see him, I bug him to either sell it to me or offer him his choice of my gun safe (within reason, anyway) in trade. So far, he just gives me a shit-eating grin and changes the subject, but I keep on him about it.
I've never shot anything else in 10mm, so I can't offer an opinion about them. I have heard bad things about 1911 style guns in 10mm with full power, nuclear grade ammo and longevity, but have never owned one, shot one or experienced it myself. I can also say that, again having never shot one, I have checked out older Glock 20s, older as in 2nd Gen guns. Case head support was very poor and the chamber was REALLY hogged out at the feed ramp. It was hogged out enough that I'd hesitate to shoot factory 10mm ammo, let alone the full power, nuclear grade ammo. I understand case head support has been improved, just as it has been improved in the .40 Glock guns, but can't testify to this myself. If you use aftermarket barrels, case head support is a moot point. I've always wanted a 10mm, but haven't bought a Glock because I just can't see buying a $600.00 gun, then having to buy another $200.00 barrel to shoot the good ammo. If you're not able to shoot the full power, nuclear grade ammo, what's the point in having a 10mm?
Bub75