If I buy one of these will it work with the Dude in particular looking for the mapping view

RB260GS is not RouterOS switch. It has own SwitchOS i.e. you will not be able to install Dude to it (you haven't such options here - http://www.mikrotik.com/download ).
I have one such at home and just looked at - it hasn't any Dude mentioning in the interface.
I.e. it is usual switch with some non-RouterOS firmware from Mikrotik.