You will lose your S-off only when you overwrite bootloader.
I s-off my phone using AlphaRev but wanted to test a few things in full stock so installed my stock GB RUU to S-on my phone again.
After that I S-off again.
It will not s-on unless you run an RUU and overwrite bootloader. Even if you get it s-on accidentaly there its possible to s-off from any state
So you shouldn't have any problem installing this OTA. This OTA doesn't have a bootloader (I assume you already on GB
). Froyo to GB OTA had a new bootloader in it.
Let me know if you face any problem s-offing and I'll assist you.
Sent from my HTC Incredible S using XDA App
HTC One X | Nexus 7
CWM Touch 184.108.40.206 | CWM Touch 220.127.116.11
5.1204.162.29 | JOP40D
Stock | Stock
InsertCoin One X v15.1.0 | Xylon 15
Previous One X Roms:
CoreDroid_ONE_X_V4.0, ViperX_v2.0.1, Android Revolution HD 7.1.0, maXimus V2.0, LeeDrOiD_One_Xtreme_V6.2.0, Energy_5.8.2012, Virtuous_One_X_v.1.1.0
Previous Nexus 7 Roms:
Galaxy SBean V2, CleanROM 3.0, RASBEANJELLY, CM-10 Nightly