I wish I hadn't deleted it myself, I liked it better than whatever 1.8 is. They aren't even the same game, lol.
Don't get me wrong, the scenes are hot and well done. But the story is just stupid. If all I wanted was a bunch of hot sex scenes I would just browse Pixiv, lol.
Rin and Saber just leave at the start for some trip, then comeback with BBC tatoos. Then just invite some random black guy to come over and fuck them silly behind Shiros back. I'd rather watch how they got turned into cum addicts instead of just banging some rando they just met. If you just want a bunch of hot sex scenes with an already corrupted Rin and saber then you will probably like this. But it just tossed out everything it had built up before.
The one before 1.5 also had a gallery at the end, I really wish I had not deleted them, because I think they all have different scenes thinking about it.
1.8 has a folder called "movies" which has most of the 1.5 scenes. It's missing a saber scene though.