I'm getting tired of carrying two phones around - a work iphone 4s and my personal S4

I'm thinking of getting a dual sim adapter and just carrying my S4. During work hours I'll have to phone switched to my work sim and after work I'll run my personal sim

I've gto both Facebook Messenger, Viber, and gmail installed on the phone and figure that they will still work regardless of which sim is in use. I'll have to tell most of my personal contacts to either viber or FB me if they need to get hold of me but suppose I could flick to my personal sim periodically during the day to check on any messages I've missed.

The bonus is that when I'm using my work sim I'll be using my work data allowance which is twice the size of my personal one. It's a better solution that hotspotting to my S4

Looking at the dual sim adaters, I can get a magicsim elite for around $50 or a cheap no-name adapter from ebay for around $9

1. Has anyone used one of these dual sim adapters?

2. Is there much of a difference between the no nmae $9 one and the expensive $50 one?