Anyone wearing a Desoto t1 top and a non Desoto bib john

Due to a lack of funds, I would like to purchase a T1 wetsuit in two separate orders. I would like to get the top first and later in the year the bottom. Is anyone wearing a T1 top and their regular sleeveless bottom. Is this even legal? Too much buoyancy.
Recommend not recommend?

thanks
Barry

I would expect that such a combination would exceed the 5 mm thickness limit.