Thanks for the added info and the link. In the end the link just states that the OS could get confused as to which interface to send packets out of. I'm not sure how often that happens, but to me that signifies that you have a problem with your network stack in your OS.
I also did not understand the point of using one static assignment and one DHCP assignment. Once an address is assigned it shouldn't matter how it was assigned, until it needs to renew its IP with the DHCP server. The DHCP protocol also handles the issue using a three-way-handshake.
Either way I am following the best practices of that article, but not for the same reasons. I have my network VLAN'd out based on the traffic, and it happens that my wireless traffic is on it's own VLAN. And yes I do keep my VLAN's on separate subnets. Also I do not have any of my TC stations with a physical network cable plugged into them, so they are all running on wireless.
Sorry, originally I was just going to post the first paragraph, but I got a little carried away.