Dual System vs. Single Engine

[adco 14]

I saw an advertisement from Envirospec where they had a special price for a dual system, 30 Hp. Kohler with pump, that produces 5 gal. 3500 psi for two users or 10 gal. for one user. What are the pros and cons for using a duel system vs. using two separate engines. The engine setup would save room on my flatbed but I'd like to hear other opinions.

Thanks

[Guy B 70]

I guess I'd have to say the obvious, motor goes out so do both pumps. Espec has some nice looking compact high volume cold units.