I like shielded. The new Limcat safeties are really nice. By the way, I can rack my slide from the rear of both of my guns that have shielded safeties. Whatever you get I would recommend a wide safety as a minimum.
A coupIe more pics that didn’t load for some reason last time
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http://i547.photobucket.com/albums/hh454/mattposvar/19A9BCAD-C555-4E0B-B071-48B560027F69_zpspyv7yjdk.jpg
I bought this one used and have an Evo on my Beastcat as well and stayed with them. After using the Evo I realized that the Limcat grip could use a little more grip. I think Johnny may tweak it at some point.
I like my Limcat Perfect Sight Hbar better due to the tungsten sleeved barrel and extra weight. The Nemesis felt well balanced and the quality was there. I don't like the magwell much but that is minor. Didn't get to shoot it but plan to one day.
Over the years I have had several LDC guns like the Titan and a couple site trackers. To me the sight block is my favorite set up. It's stupid flat and very quick to return back to zero.