I used Lucky charm for one of my main characters on my last playthrough in the original D:OS, and was very unimpressed.. While i was getting like 1 in 5 "Lucky Find", of those, the large majority of them were white crap, or crafting mats... Ofcourse, by the time i had enough points (and gear) to get Lucky Find to 5, i wasnt in need of crafting mats, and sure as heck wouldnt equip a common item...

I hope its been changed in the EE, but i dont know if ill be taking it.. And im the type who wholly rp's my characters.. I dont max my combat skills/abilities first, and then worry about barter, crafting, pickpocket, lockpick, charisma, etc.. I f thats the characters i had in mind upon creation, thats the character i want from start, to finish.. All his/her skills grow equally..

TL:DR- it wasnt useful in the original D:OS.. It did work!!! But the items found were common, or crafting mats..