Most companies I worked for make contracts with multiple suppliers, however alot of these contracts were standby only, they had to be ready to supply but no orders got made unless the first supplier failed for whatever reason.
In some cases I have also seen multiple suppliers at once and this did lead to a lottery in the product quality, e.g. at walkers crisps they had more than one supplier for the potatoes, but there was some very big variance in the quality from one supplier to another. The low fat crisps always had priority of the better potatoes.
If skipio this name I never heard off really is the leader, then yeah pick two vendors both using that chipset.