Fwiw I used to daily an x210 and then an x230 in IT and pretty frequently typed with one hand while carrying with another without the weight bugging me but your mileage may vary.

You can definitely send them flying and not damage them my coworker launched theirs across the office and the bezel just snapped back together.

I have a T480 now since I do more dev work and needed a slightly bigger keyboard/screen and it’s phenomenal with Qubes and 48gb of memory on the quad core i5. Love the ease to repair I just swapped a motherboard on it in around 30 minutes and was back up and running