Hey Jeff, I picked a LaserLyte Laser ($91.50 ) for my TCP 2 weeks ago.
Install was a breeze, as I had already watched the Taurus TCP installation video at the LaserLyte website.
My Observations :
1. INSIDE Under ALL lighting conditions, both day and night, the laser is very bright. See picture 1 (inside at 2:00 PM with lights on) Distance was about 7 yards
2. OUTSIDE I had it at the range one time, that particular day it was very sunny, and there was a lot of snow pack, the laser was dim, but somewhat visible at 10 yards.
Today was overcast, and the laser was a lot better, and very visible out to about 25 yards. This was at 1:30 PM
Picture 2 shows the laser at DUSK . The shed is about 100 feet away, if you look at the door of the shed the red dot plainly visible. Try to make that shot without a laser !!
At night an hour after sunset, in full darkness, the laser is very visible at long distance probably farther than the accuracy of the TCP