Advice: Anyone Also Use Premiere Pro? How hard to learn if long time FCPX user?

I am being recruited for a long term gig but I need to edit a lot of content in a fast paced environment, and they use Premiere Pro. I have been using FCP since the end off the 7 era. I consider myself quite advanced in FCPX, but it's not my every day job, so certainly don't consider myself an expert. I have used it for films, broadcast TV, commercials, docs, YouTube, social media, etc. and everything from end to end including color racing and sound to round trips to Resolve, but again, not expert level. I use Resolve for color on occasion but I do most grading in FCPX.

I have used Photoshop and Lightroom, but have never tried Premiere Pro or after affects. If anyone here uses both, or has used both, how hard would it be, and how long would it take (on average) to become proficient with Adobe apps?

Should I just pass on this, or would it be possible to learn it well enough if I have a couple of weeks before starting?

I use Premiere Pro at the main day job. If you knew FCP7 well, then Premiere Pro will feel similar enough. However, if you've only been on FCP for the last 10 years, then there's a lot of muscle memory to relearn. I would think you'd be comfortable in about a week, especially since the track-based editing design is more or less like the edit page in Resolve, which you currently use. Figure a couple of weeks to get in deeper.

After Effects is a different story. If you are going to be required to use that extensively, then you'll need to dig into a lot of tutorials and do some practice to get familiar enough for the basics. That being said, the basic AE concepts are pretty straightforward, but there are plenty of specialists who are able to create the most intricate and involved compositions. So it will depend on whether you really need to know it. There is certainly no need to ever use AE in day-to-day Premiere Pro edit projects if you don't want to.