Yes its a nice feature.
Here is how I done it:
1. Installed wowhead-tooltips instead of the bbtips because of the [armory] function.
2. I created custom field for Main Character and Alt 1 to 3.
3. Installed Parse BBCode in Custom Profile Fields mod
4. Users must enter in the character field the character in the [armory] [/armory] tags so it would be parsed
5. Edited the memberlist so it showed the Main character field.
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