I have shot with thoughs grips a time or two. Grips and laser seemed fine, they worked like a charm.
Lasers on the other hand are just not my thing. I think they hurt my shooting more then help. And, I really cant see my self ever needing/using one in real life. I do not think it whould help in a home invation or in a car jacking or even somthing like being jumped at a ATM. It is just one more thing to remember to push, when under high stress and presser/fear of an atack.
But hey, if you want one, I think the grip laser on the 1911 is the best way to go. Easy to install too.
Dave.