While I've tried the NoCents clone and didn't like the feel of it, yours with the stainless braid line is a step up above, but its still a two hand operation.
If you were to ad a nozzle with a delivery line like the KnuckleHead injector, you have something going.
I don't pull it out much unless I'm doing quantity meats, but it certainly is easier than a syringe. The needle is on a swivel joint and there is a positive flow lock and it has enough pressure to get the job done.
B-O-B made me a "stitch needle" injector for briskets.
Now brace yourself for the squeamish "is it food grade" material onslaught!!
Let it flow!