GP said they "can't be charged while being used". Which is categorically incorrect. They can, and on the scale of Things That Are a Big Deal, it's an 0.3 out of 10.
They can't both be used, and c'mon; is this really a debate? You cannot use _both_ of them and charge them at the same time. The best experience comes from using _both_ of them simultaneously. So, it's a workaround. It's fine, it's whatever, but it's also silly to get haughty about it as if there were no impact whatsoever.