I took 7oh for the first time on subs and it worked

So yesterday I took 7oh for the first time. I have been on subs for a couple of years. I take 8mg in the morning and 8mg at night, so when I woke up, I decided to take no subs in the morning and took 7oh, and man, it hit me pretty good. It felt like really strong hydros or a low dose of oxy. The high lasted a good two hours, and after that I still felt good, but not much euphoria. I was still nodding off, though, and so after about 6 hours later, I took my 8mg of subs, and I didn't get any PWD, and today I'm back on my normal mgs of subs. I'm just surprised how strong this stuff is and how subs weren’t able to block it. I only plan on taking it on weekends or special occasions, but yeah.