I did download it, in steps:
1. Join a channel
2. Open a query window to someone (the query window's switchbar button should be to the right of the channel's)
3. Go to the channel window and move your mouse over a nickname
4. Press ctrl+tab to switch to the query window.
5. Right-click and select Whois (or something similar)
For me it /whoises the person whos name the mouse was over in the channel window, instead of the person the query window is open to.
Edit:
Also, if there is text in the query and you move your mouse over it after completing steps 1-4 then perform step 5 it will /whois the word your mouse is over.
