Mixing complete protein with 3.1?

I bought loads of Black as I wanted to change my diet a little, but I don’t fold it as drinkable it is very I wouldn’t say thick, maybe viscous, it also doesn’t taste nearly as good as 3.1, the difference between Oat and Pea I guess.

I’m wondering if anyone has mixed in a portion of complete protein into 3.1? I might try it tomorrow, see how I get on.

Both contain pea protein. The difference is v3.1 uses oats as the carb source and black edition uses tapioca as the carb source which is much smoother / less grainy than oats.