Yes and no.
Yes: You can have multiple untagged subnets on a single interface
No: There are some odd restrictions.
In OSPF/RIP you can only choose to adevertise or not advertise all of the subnets. i.e. it is bing controlled at the interface level instead of the subnet level. Very annoying. I have had a request in to change to for some time.
Engineering DID correct a similar error on one-to-one NAT. You used to only be able to select all subnets (which made no sense at all). Now you can select the individual subnets.
So - it works, but one little gotcha.