I have no experience with them. That said, Sav is not going to sell you a pipe that has major defects. Surface blems? Sure. But they will not sell you a pipe that is drilled wrong or has blems in the bowl. Blems in the bowl would cause burnout and wrong drilling would be a warranty situation. They are just pipes that will not get the high grade finishes, because there maybe be a surface blem. Also, it's cheaper for them to produce, as they skip an entire lengthy process of finishing. And time equals money.
Gibson, among others, produces lines of guitars with less expensive finishes. The guitars are the same, just not finished to a high gloss. According to Gibson, a Les Paul Standard in a matte finish costs half as much to manufacture. They can sell the guitar for $1200 instead of $2400, like the high grade finish.
I think it'll be fine.