I would never do it, BUT, I wouldn't bust chops to hard if u did do it. The support for the LS engines is amazing and very tempting plus they are a good engine.
Are you going to use the OEM GM electronics or an aftermarket system like a FAST? If an aftermarket I say to HEMI. I know they're more expensive but I think they're a better engine. You can buy a retrofit kit to put the LS1 computer and sensors on a HEMI. If/when I use a HEMI that is the route I would go, OEM reliability and more parts than you can shake a stick at