I don't have exprience with Daswise sorry.
But I have used or read about the following for iPhone 7 (6+ versions should be the same):
1) D&P: The best Oleophobic coating I have ever used. Only issue is that some arrive with defective adhesive. If you buy from amazon it can be exchanged but it's a hassle to do so.
2)Orzly: Oleophobic coating sucks, sharp around the home button cutout. Otherwise good.
3) G.D. Smith Icemax 3d. Used to be good for the 6, but they seem to have changed the manufacturing process for 7 and now is not as good. Don't know if they are still using the old manufacturing for the 6.
4) Zagg Luxe: Expensive, ugly plastic border instead of glass. But they have a good oleophobic coating and a lifetime warranty that covers cracks.
5) Imos: The most expensive e2e. Considered by most people to be the best. Way thick and needs to be purchased from China.
6) Tech Armor: Supposed to be similar to the D&P with better customer service.
7) SecondSkin: Same as Orzly but more expensive.
Hope this help. please follow the iPhone 7 thread I Posted as there is ongoing discussion.