Doorworks alternative door lock holders

[dnimtz]

I've seen one product that is an alternative to the standard Doorworks holders that hold the doors in an open position. That product is from HMS Door Locks. It basically mounts to the cart's top cover, and uses an adjustable rod that hooks to the opened Doorworks door via an eyelet type attachment. Looks like a good design and much quicker than the included Doorworks holder. But it costs $30.

Does anyone have any other alternatives, opinions, or any DIY approaches?

Thanks.

- Dan