Gary, that was an interesting read!
But if I understand integrated SOI FETs correctly, then they have no body diodes, and very low capacitances! So the main two problems of common MOSFETs for RF switch use aren't present in SOI FETs. This indeed makes SOI FETs good devices for integrated RF switches. But using commonly available, cheap, discrete MOSFETs in the same role, with their high capacitances and their body diodes, is something completely different.
Manfred
