Is it bad practice to create and shutdown services during runtime?

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Hi all!

I'm trying to connect my robot to a webserver using a node communication node.
This node creates the service "/get_webdata" when the connection is established and authenticated. When the connection is lost, the service is destroyed again. This allows me to use wait_for_service in other nodes, which is pretty useful for waiting without ugly sleep-loops.

So my question is: is this a common ros practice to use:

webdata = rospy.Service("/get/webdata", Webdata, self.web_cb)

and

webdata.shutdown("Connection lost")

to signal other nodes if the connection is up?
I didn't read anywhere that it's bad practice, but it feels like I'm abusing this feature. Would it be a better solution to keep the service running all the time and instead return a status variable, indicating that the connection is unavailable?