That's what I've been doing for 20 years on my Commander...... I bought the large sheet for a stair tread and still have 75% of the first one. It takes a lot of use to wear through the grit, even with daily handling.
That is what is on the front-strap in the pic below. It looks fairly un-worn, so it was probably a new piece I'd just put on when the pic was taken.
Nice pic. That grit looks brand new and possibly even coarser than mine. My fingers have worn the grit down a little, and it's done the same to my fingers. Mine is a lot less gritty now. I seriously thought about buying the large stair tread pieces too but I'm glad I got the roll of tape instead. It works great on my double-wide Para .45s. I used it on the fore end of my Mech-Tech too but it didn't stick very good and I peeled it off.
I bought strips of grip tape that I believe were 3/4"x12" and put them on the tailgate of my pickup. Before I put it on there I was doing something in the back of my truck that has a cap on it so I have to crawl around. It was a hot summer day and my hands were sweaty. When my hands hit the tailgate they both shot out from under me and I flew out like Superman! Too bad I didn't stick the landing.
I bought 2(?) packages of the pre-cut tape and put 1 and 1/2 strips end to end on each of the raised ribs of the tailgate. I haven't flown since. I guess I should have started a grip tape thread instead of hijacking this one.
ETA: I took another look at your pic and see that the top of your tape is a fraction of an inch higher than mine. It doesn't like to curve one way around the front strap and a different direction toward the trigger guard at the same time.