He's outperforming House at AA. Granted, House is still 20 and Lipscomb is 23. House is .316 / .365 / .392 with 0 HRs over 85 PAs, while Lipscomb is .335 / .359 / .525 with 9 HRs over 245 PAs. Both guys demonstrating walk allergies.
In terms of where they are playing Trey, he's played 76.2 innings at 1st, 48 at 2nd, and 26 at SS, in addition to time at 3rd. The total for 1st, 2nd, and SS is about 150, which is close to House's AA innings (174.2 at 3rd exclusively).