Glenn, I've used a partial windscreen with my upright canister stove for many years with no problems. As I mentioned, I do check very frequently to make sure the canister isn't heating up. It really saves a lot on fuel when it's windy! I'm not the only one who has found this out. No less a stove expert than "Hikin' Jim" recommends a partial windscreen for canister stoves.

Definitely do not use a full windscreen and do monitor the canister closely if you're going to do this. More details on safely using a partial windscreen with a canister stove here. Actually, Jim's windscreen shown in the link goes a lot farther around than mine does; mine goes only 2/3 of the way around the canister.