I certainly don't love mine. It requires regular tweaking of the knobs, even with O2 feedback, and seems worse since I switched to the little "2D" box. I do have ideas to improve Holley's design.
Many after-market places sell a tail-pipe mounting kit for permanent installation. It only needs to be far enough up to insure it isn't seeing air from outside. A wideband sensor has its own internal heater that always runs (not just warmup like 3 or 4 wire regular O2 sensors). Indeed, you can ruin the sensor if you run it long disconnected. Without the heater running, the passages can clog permanently with soot.