It was far from a polished performance from coach Rob Moffat's troops, edging the encounter 10-9, and Jacobsen insists the Scottish outfit were lucky to escape with the points.
The Scotland prop, who scored a late try in the win in Italy, said: "There were a lot of stupid mistakes, a lot of silly penalties and dropped balls.
"We did not play well, we are not happy, but we did win away from home.
"We have not started the season well but now we have won two in a row - that has got to be worth something.
"There was a lot of pressure and usually that is when the mistakes happen but we held their nerve and got away with it. We'll take it the victory though."