You can do this. The best way to see signatures, in my IANAL opinion, is as layers of protection. The goal is that the person who signs the agreement has total

You can do this. The best way to see signatures, in my IANAL opinion, is as layers of protection. The goal is that the person who signs the agreement has total understanding of what they are signing, and there is a paper trail of intent to abide by the agreement. To that degree, if the agreement is important and you have a lot on the line if the counterparty decides to re-neg on the agreement, you should probably not do the above. But going in the opposite direction and insisting on notaries and wet ink might go too far in respect to how much effort is required.