I'm currently using LAGs like that to connect to my servers and other stacks with 6224s and 6248s.

It is a great feature which is one of the main reasons I purchased these switches.  Once you stack two of these switches they function as one unit.  The only bad thing I have heard is that if the master switch fails it can take a minute or two for the stack to come back up.

Here is a sample dump from my running config of a LAG:

interface port-channel 5
description 'To ****** 6248 stack'
switchport mode general
no switchport general acceptable-frame-type tagged-only
switchport general allowed vlan add 2 tagged
switchport general allowed vlan add 1 tagged

interface ethernet 1/g22
channel-group 5 mode auto
switchport mode general
no switchport general acceptable-frame-type tagged-only
switchport general allowed vlan add 2 tagged
switchport general allowed vlan add 1 tagged

interface ethernet 2/g22
channel-group 5 mode auto
switchport mode general
no switchport general acceptable-frame-type tagged-only
switchport general allowed vlan add 2 tagged
switchport general allowed vlan add 1 tagged

Just for the record: Yes, it works.

The only problem is that, there are only 8 port channels per whole stack. 

8 was the limit in ver 1.x.x.x firmware. 

In the new 2.x.x.x firmware you can have up to 18!  Which is a lot better, but might still not be enough for some environments.