GET IT! GET IT! GET IT!
I have this same exact gun only in .40 and I love it. I use it in IPSC matches and it has never let me down. The mags are the same for the .40 and 10mm so all I need to convert over is a barrel and heavier spring. This gun when loaded is heavier than a normal 1911 so recoil will not be an issue, not that 10mm is as bad as people think it is. Honestly, a Beretta 92 with +P is way worse than my Witness 10 and full power loads. Anyway, back to the Rock Island, I highly recommend it. Very reliable, accurate, and mags are easily available through R.I.'s sister corp. Advanced Tactical, and they aren't expensive either.
https://advancedtactical.com/products/.40sw/ria-full-size-1911-a-2-magazine-high-cap-P16-40sw-10mm
I am super excited for this gun and cannot wait to get it eventually....