Swimming dealt with it in 2009 after complaints that suits like the LZR Racer provided too much buoyancy and records were being broken at an unusual rate:
The multiple suits issue is generally downplayed because it doesn't promote Speedo's new technology and casts swimmers as cheaters. Imagine showing up to a race with your new carbon fiber running shoes, only to see your opponent wearing "Moon Shoes" strapped over their high-tech shoes. It looks ridiculous, but there was no rule against it at the time.