Long story short, I still play bass with friends, love my Fender P, jam at least once a week, but for the past two years, I have been 95% dedicated to guitar. I play guitar every day and started a band about a year ago playing guitar. For the first year or so, I tried numerous sizes and thicknesses of guitar picks before settling on one that I always use now. (Dunlop Gator Grips .57 mm) So I have a ton of various picks lying around. So, for about 25 years I played bass guitar finger style. It is how I was taught. I played in bands almost the entire 25 years. I play finger style 100% of the time when playing bass with a band. I can also play slap and I can also play thumb-style but I usually do these things when playing around by myself. However, I have always been terrible with a pick. I picked up my bass yesterday and was playing through my Ampeg SVT AV and 810. I was loving it. I grabbed a dunlop pick, 1 mm gauge. I discovered that after two years of playing guitar almost daily, I can now play bass equally as well with a pick as I can with two fingers. I can play everything I can with my two fingers using a pick. I never thought that would happen but wow. I was having fun yesterday getting that pick sound and rocking out with a pick. I really never thought I would be able to do both equally. Learning guitar (with a pick) is a phenomenally fun and effective way of learning to play bass with a pick.