Speaking as one who made the transition 45 years ago, I'd say that if you play (say) A B C D by moving your index finger up three times from the 5th fret rather than playing either open 2 3 open or 5 7 8 5next string, you've come from guitar and you're effectively doing barre chords.
I started playing guitar classically, then went on to play with a plectrum, and when I took up bass, used my fingers. I have occasionally played with a plectrum, and when I play guitar, I play finger picking or plectrum as required. Due to the carpal bone of my right index finger being broken when I was beaten up 40 years ago and not being set properly, my forefinger and middle finger are a bit out of line and that (even now) makes even picking tricky, so for what would normally be fast alternating picking, I may use a plectrum instead.