Yes, I'm aware of these.
Remember that you cannot just put such an interface into your chain because the M-audio's output in this case is line level. Most pedals have instrument level I/O so impedance mismatch is very prevalent is this case. The interface HAS to be the last fx in the chain, and even then, you can't just feed it's output back into a guitar amp. It can work as an insert fx as long as the insert loop uses line level impedances; even then most inserts are mono fx. In some cases, you can use the inserts of digital multifx since these are usually line level.
If the interface is the last in the chain, you have to feed its output to a mixer line input for proper impedance matching. This is so you could monitor the output of your chain. Even then, I've known of problems with routing especially if asio is not supported, although maudio usually has good asio support. Like I previously mentioned, latency will play a big role here, especially when it becomes audible.