LT3080: FAQ

Yes, it is possible, and in some cases, required to have Vcontrol at a higher voltage than Vin. For example, if you are looking to achieve the lowest dropout, you need to have Vcontrol at a higher level…

Yes, it can be used to delay the startup of the IC by delaying when Vcontrol rises relative to Vin. This can also be seen/verified in LTSpice.