Maybe but you're still using safestrap to hijack the boot sequence so your adding a rom on top of your stock rom giving you less room on your s4. I understand safestrap very well as I came from a DROID Bionic using SS then SS with kexec. I would still never give up MDK. If I had to ever replace my s4 with another s4 i'd be thankful for SS emencely but I'd never willingly give up MDK. And that's all I'm saying, I would never recommend giving MDK.
T-Mobile 32GB - Rooted (TWRP 126.96.36.199)
Galaxy Note 10.1 32GB 2014 Edition
Galaxy S4 (VZW MDK) sold to pay for my Note 3
Droid Bionic - Traded for Note 3
Droid X - Now a WiFi phone.