Yes, the hoses are very tight fit on the two tiny metal tubes on the IWE, take your time and don't force them. I don't like the type of connector they used at the vacuum connection end by the master cylinder, it does not have as positive of a connection as the stock connector. I put some specialty self sealing tape around this connection, as I don't trust it.
Maybe I should just get the stock part from the dealer. It seems like the way to go is just to maintain the system and maybe the kind of mod Dane is talking about rather than wholesale changing things up.