I didn’t really experience different symptoms when I switched from shots to the pump (I typically get the classic shaky/sweaty/panicky/blurry lows), but I did experience some different types of lows - one I like to call the “wrong bolus” low, which hits hard and fast like the lows I used to get from shots, and also the “gentle basal” low - which sets in so slowly that you don’t notice the symptoms right away.
However, I have noticed that my symptoms did change when I got into tighter control - now I usually don’t recognize my lows until I’m in the 60s, while I used to feel them as soon as I started dropping. I typically just feel some muscle weakness until I hit 50 or so. I also get really irritable before I notice any other symptoms, which is a new one for me and lots of fun. On the plus side though, now I can usually tell as soon as I start heading above 160.
So, if your control has improved a lot since you switched to the pump maybe that has something to do with it?