I have created a package which effectively gives you the S-OFF experience if you are S-ON.
Great concept, thank you for this! Had to get myself a One first, but jumped on this project right away. Took me a while to get it right, I'm S-on (impossible to go S-off on Hboot 1.54 I've understood?) and misread the second part of flashing the S-on support package. After the right flash, it switches like butter! Still, after playing with it for about a day, there are some topics searching the forum didn't answer so decided to weigh in on the discusion too.
First, and most important: when I flash the package from this post and I Nandroid back to another ROM, will I still have to ADB the command to get back to complete S-on? Will this work on 1.54 (opposed to the posts I've been reading you can't go S-off on 1.54?)
Second, you've replied already that the ROM should feel as responsive if not slighty better than stock ROM. I have to agree though with the previous user that indeed the ROM(s, both Sense and GPe) feel a little slugish at times. More so than other ROM I've tried before Switch (Android 4.3, Sense 5). Might this have something to do with the ROM not being odexed (yet)?
Anywho, I love the concept and hope you soon get out of Beta. Would be completely great you would be able to choose your own Sense ROM!