Its not prop--they probably use the word prop b/c people associate it with fast acting/short lived test, and that's what we have here.
Its not methyltest, its test base compounded with cyclodextrin for delivery.
Cyclodextrin delivery is not new, and it is in fact proven to be effective. Only thing is you need frequent administration to keep levels consistent. Probably like 4X a day or more.
If you don't mind drinking a bunch of this daily, I'm sure it would be effective (assuming the test base is good).
I know of another reputable source that has a sublingual mixture of bases of Test, Tren, Nandrolone, and Boldenone.
Apparently you hold under your tongue for 10min.
Certainly, pinning is superior. But this is easier to get away with, if you're being watched.