I have also spent years riding motorcycles and It all depends upon the road surface. If it is dry and warm and the tyres are up to operating temperature, I would be putting most of the braking effort into the front wheel. Damp, wet conditions or banked over I’d be using 50/50 front rear split. Same with a bicycle..... and in any case, you should be able to feel how the bike is responding and adjust your braking accordingly.