I'm telling you something you already know Leo, but learning throws against non-resistant opponents will only be of limited benefit to you in the long run. And a lot of Judo throws (regardless of where you learn them) still might work your shoulder pretty hard, which could make life difficult for you because of the spur.

Give it a go though. I should also say that if you do want to continue with throws, a good BJJ school will teach you throws and other takedowns too, but you have options of NOT having to throw someone in BJJ sparring. In modern Judo, you are more or less expected to throw someone (or get thrown). You have far more options in BJJ. You can simply pull guard on someone in BJJ sparring from standing, and you both go down in pretty safe and pain free manner.
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"Let your food be your medicine, and your medicine be your food" Hippocrates.