Same, holding on for dear life with my S10E. It's the best form factor, great power button finger print reader, dual SIM, I mean, what's not to love. (battery is kind of meh, but I've added a halo ring and a magnetic induction battery).
What's the point of a small phone if you're going to stick a big battery to it?
My phone is big, but I don't need an external battery. I'm curious to see the size and weight comparison between my phone with a big built in battery, and your phone + battery combo.