Thanks for the answer! I was planning to connect the switches like you descibed in order to provide redundancy and high availability.
Regarding failover or a planned maintenance, I would like to avoid experiencing the same problems we have with our current Cisco SG500s. They also advertise stacking (which works), but on the high availability department they fail miserably. When one of the 2 members goes offline (or gracefully switching master), it takes about half a minute before the stack is "reconfigured" (?). During that time all services are down. When asking in the Cisco forums if that behaviour is normal, the answer we got was more or less "what do you expect when you buy so cheap?!".
So, I would like to avoid buying HPs version of "SG500", if you know what I mean. I am looking for milliseconds of downtime when performing maintenance or in case of switch failure.