My comments on grip screws should have been about 92s in general, not your edc in particular. I apologize.
The LTT does come with stainless screws. The Langdon M9 that is my normal EDC is a different model that didn't come with stainless, and it was a definite need in my case. If you already have the stainless hex head screws the hogue flathead stainless wouldn't be needed unless you just really like flathead screws.