Z60 or ZR60? Are we talking about a little camcorder here?
On the plus side, it is making use of equipment you already have. That's about all on the plus side.
The downside:
- You'll be tape-based for your audio, and stuck with real-time capture. (Recorders like the H4n are file-based, and audio is quickly imported to editing programs.)
- No XLR inputs. The in-camera mic on that camcorder won't be enough to do much at all, so your alternative is external microphones. not having XLR ins is a challenge and would really require getting an XLR converter from Beachtek or Juicedlink.
- Passing signal through the camera's less-than-savory pre-amps no matter what you do. This is a signal killer, and will give you noise and all sorts of other issues.
- Bad AGC that cannot be defeated. The camera will have an automatic gain control that may not be able to be turned off (my guess is not). This will create a "breathing" or "pumping" sound in your audio. It may be marginally better than recording straight to the T2i, but not much.