Our company has used Multisim/Ultiboard for about seventeen years now. I wouldn't know how to calculate the opportunity cost for developing our corporate library of components, but it's safe to say it has been substantial.
Since importing component libraries would save time, I asked NI Technical Support about importing ECAD libraries.
"Unfortunately there is nothing on the roadmap for this feature right now. ECAD is certainly a requested feature and we are interested in potentially working it into the product. However, there is no any plan for a soon release."
I recommend to anyone considering purchasing PCB CAD software to consider this.