I wouldn't call it oinky, but the instrument is what it is. It's a bass tuba which has been big-i-fied to "make do" on contrabass rep. The low register of a compensating Eb takes a little different blow to it, but it's easy to figure out and make it go.
If you have the opportunity to spend some time with such an instrument, you might not want to give it back.
The only "sorta" negative thing I've got to say about those 19 inch belled Eb tubas is they always want to sound pretty. A lot like a 3+1 compensated euphonium. One has to work to put edge or gruffness into the sound if that's what you want to get out of it. The 15 inch ones have gruffness in spades.
The 19 inch bell English made Bessons have a very captivating sound. It's just lovely. Not that any of the others makers' models don't sound good, but there's something special about the English Bessons. I don't know if the current German made Bessons have that.
A 19 inch bell 3+1 compensated Eb might just be the ultimate "old man" or "retirement" tuba.