Do you guys ever lose fluency with Siri & Google Now voice recognition?

Do you guys ever lose fluency with Siri & Google Now voice recognition? Just wondering if anyone else does. It's pretty weird because I can usually speak to myself fluently but as soon as I speak to Siri or Google Now, I almost always block. Does anyone else have this issue? I kinda feel left behind with the whole voice recognition stuff, because I don't think I'll be able to really use it.