Reservable Only is checked by default in client portal Assets tab

Is there any way for 'Reservable Only' to default to unchecked in Assets when the client logs into the portal?

....had a look, can't see a way to do it?

In Assets> Options I have Clients Can Search Assets enabled (so they get the Assets tab when they log into the portal) and Limit to Assigned & Reservable checked because I want them they to only look up or log tickets against their own kit. I have not got any reservable assets set up in the database so the Reservable Only check causes confusion because when they log in & go to the Assets tab, it is blank.

Any ideas please?

If not then I guess it would be a dev request to make limit to assigned assets & show reservable assets as 2 separate options?

Thanks!