I am surprised you think you need key clone for 2boxing EQ1 on the same PC.

I was able to 2box EQ1 running both accounts on the same PC for many years with no additional software except EQW (eq windows) in the old days and then after they brought out some expansion or other that allowed you to run multiple instances without any additional software at all. I used Alt+tab.

Combat in EQ1 is slow enough that its easy to switch between toons without any real effort - sure its a little more work but even then its still slower in pace than WoW.

Go for a good toon combo and you should be able to do everything with just alt+tab.

Some that worked for me were......Warrior+Cleric - Enchanter+BL - Necro+BL......

EQ1 is still my favourite MMORPG, but I had to switch to WoW simply because I was sick of hugely under populated servers....99% of the time I was playing I was the only person in any given zone - A massively multiplayer game needs more than one player if you ask me.....

For a game thats so focused on the "group" to level - I did 40 levels in EQ without grouping with anyone just before I quit and it wasnt by choice. As I said - its still my favorite system but it isnt much fun playing by yourself.