I have been wanting to do this for years! I think the only way I can do it vertically like you is on one of my UDS'. What temp did you run at and what temp did you pull the meat. Sure looks good from my end.
I cooked at 275. My plan was to pull at 185ish. But like I said, my meat probe on the IQ was off. So probably ended up pulling a bit higher than that. Maybe around 205. I also wanted to make sure I had some char when I sliced into it.
But if you do a couple searches on here you will find some great homemade ones that won't break the bank. If I remember correctly, Shadow Driver just made one not too long ago.