I've had a bucket with a lift out tray before and found it great on te river and for tenching. Using the tray as a mixing bowl for groundbait/method mix while keeping bags and tubs of bait underneath. At other times I used the tray for tackle with bait underneath, and sometimes used the bucket to carry all my gear on short sessions. It wasn't perfect though.

The large size would be good for long sessions while the smaller one should be ideal for evening sessions on the river with pellets and PVA nice and dry in the bucket and hookbaits in the 'bowl'. There will be many ways for anglers to make use of these buckets, I'm sure. As soon as they are in stock I'll be having at least one to play around with.
I think the big bucket will retail around a tenner and the small one half that.