Hey, It's wonderful to see people picking up the bow!
A bit of info -
Intonation doesn't extend from the bow its all from a solid understanding and dedication to the left hand... Which requires hours and hours of time and care to have "good intonation". Therefore, regardless of you playing with a bow or fingers (pizz), it won't make any difference with "being in tune" or not. A good solid left hand technique and a understanding of the mechanics behind the double bass will excel you're learning. Now, I'll back up what I'm saying with a theory... If you pluck the G string on the double bass, its going to sing "G". Then play "G" with the bow, the "G" will still be the same, but it will be more refined and precise with tone and sustain etc... But regards to the intonation, it's the same and it doesn't matter what tool you use in playing the double bass... So if you play "A" (Plucked) on the g string, but it's flat; by using the bow - won't correct the intonation... A shift in the left hand will and then checking it against the piano and then a tuner if you feel that you are not certain.
Using the Bow will help you hear what note you are playing with more clarity. But, clarity isn't intonation.
Just thought I'd add that in and let you make your own decision in what you need/want to do.
Message me if you got any questions or don't understand what I've just said...
All the best with your double bass endeavours.
-F