Is there a benefit in having 2 apple ids?

Not really. Why do you want 2 IDs? The only time 2 IDs helps is to keep from mingling data together. For example, if you use one for work related data and one for personal data. By having 2 IDs, you can keep the data from being mixed together,

generally not - why exactly do you want to have two Apple IDs?

LN

I see that as more of nuisance then a benefit. Everything purchase from the App Store could be tied to one or the other.

See this article About your Apple ID email addresses - Apple Support