Fisher & Paykel is the only manufacturer making dishwasher drawers AFAIK. I think the DW drawers are best as adjuncts to a regular dishwasher. For example it would be great to have a regular DW plus a DW drawer just for glasses which tend to fill up first and quickly in a regular dishwasher.

Fisher & Paykel put the drawer units on the market in the mid/late 1990s.

A few other brands (KitchenAid, Kenmore, Maytag, DCS) offered them for a few years. Some of those were F&P's design relabeled as the other brands. Some were a different design that was developed by Maytag but never produced by them. Whirlpool got the design when they brought Maytag in 2006 and had the units produced for a short time.

The only units available nowadays are from Fisher & Paykel.

I have an F&P bought in 2003 (18 years old). It has two significant repairs, both DIYed. Drain hoses (cracked) and a related part in 2015. Dispenser assembly (leaking rinse aid) two weeks ago. They do not fit large items such as cookie sheets, serving platters, large baking pans and casserole dishes, stock pots, etc. very well due to the limited vertical space. Some such items (maybe a few depending on exactly what items are involved) can be loaded at an angle or flat-down but little or no space is then available for adding other items to the load. They either fit the household's usage habits and are liked, or they don't and are disliked.

From Consumer Reports test of the DD24DDFTX9N:

"This relatively pricey two-drawer model from boutique New Zealand brand Fisher & Paykel earns one of the weakest overall ratings among dishwashers...Disappointing marks for reliability from Fisher & Paykel owners in Consumer Reports’ surveys further diminish its Overall Score."

I had a FP from 2003 until 2017, when I decided it wasn’t worth putting any more money into for repairs. It looked good, but as mentioned it didn’t fit bulkier items. Plus is had to be cleaned inside all of the time (a horrific funk would take over). I replaced it with a Bosch and have never looked back. I love my Bosch.

We have one and it works well. I love the convenience. We also did a DIY repair with parts ordered from FP. My biggest gripe is fitting common dishes and glasses into the drawer. I feel like we are always rearranging items. Unfortunately the style has not changed in 20 years.

There have been revisions on the racking. Adjustable tines (fold-down and variable spacing) and height-adjustable side shelves (instead of fixed-position).

It's generally said that a drawer holds 60% of a standard dishwasher load. That depends on the dishware involved. It can hold more than expected when things fit.