I've flown that way, I don't think it's terribly uncommon. Madcow 4" FG Nike Smoke, ~6.5 lbs pad weight, had my drogue attached to the nose cone U-bolt, and a Chute Release-tethered main about 1/4 down the line (two separate chute protectors). I have a video of the first flight
here, I was having some trouble with screen glare and the clouds and just missed apogee event but the Chute Release event was in-frame.
The particular flight in the video (and my second one that I basically lost at apogee so I don't have a good video for that one's descent) was motor-eject, but my ultimate plan is to use electronic eject (ET TRS in the nose) for the separation, because (1) I've just had too many problems with very early/late motor ejections that I don't trust them, and (2) I plan to fly motors that have known issues with or don't support motor eject, like CTI VMax motors or plugged motors. My reason for using the Chute Release is because this rocket isn't designed for DD, it has a single separation point so I'd have to go with some sort of tether to do a mid-descent main deployment, and Chute Release looked a
lot easier/better than the other options that involve slicing or melting zip ties or the like (I had previously tried making my own hot-wire zip-tie cutter based on a thread here and had nothing but trouble getting a clean break of the zip tie, I had given up on this before the Chute Release came along). This rocket should fly again this weekend at XPRS, not certain if I'll be fully set up for electronic deployment by then or if I'll do one more motor eject. My biggest issue still to sort out was with the safing of the charge, I had originally planned to use a pair of magnetic switches but getting them close to the NC edge was proving to be tricky (base is much wider than my opening, and the part of the NC that is as wide as the opening is a long distance away from the base), I'll probably end up just leaving the TRS electronics powered and using a WiFi Switch for its deployment battery, that way it can be deep within the nose and I can still safely arm it on the pad.