My 2 cents worth

I am not familiar with the Adco Super Thumb, you show in your photo.
So, I looked it up on the net and watched their video....
In it the presenter, boasts the cost is about $10
($9.99 and Discontinued @ Midway) Amazon $11.00
Ebay $8.00.
Several years ago I paid $28.95 for a Maglula Uplula 9mm-45 ACP (now about $34.95)
It works ! double stack, single stack , 9MM or 45 ACP ...
I bought it on a recommendation for my SIG 365 9MM which has arguably the MEANIST double stack magazine on the planet to load. (Hellcat owners will argue the point! )
It made a sweet gun's *itch of a magazine a joy to load.... and it loads my 1911 Mag's as a plus.
$34.00 well spent
and scraped my MakerShot