Unregulated Solar Panels

Depends on the regulator but what you are suggesting will work.

I set up my folding panels so that I can use them with, or without the regulator.

We don't know the size of the wire cable from the panels to the Redarc. Many solar fold systems come with wiring but it isn't as big as you need to allow the current flow without a voltage drop.
Ideally you want no voltage drop between panels and regulator while operating, and a large cable will minimize that VD so that the then higher voltage applied, can fully utilize the regulators abilities. If the wire is small then the best reg in the world won't do much at all.
It is all for efficiency, sun energy to AH of charge energy stored in the bank.

I have a Redarc BCDC1240-LV installed in the tub of the Dmax.

Because I don't drive enough at home to keep the 120ah battery charged, I have mounted a 150W solar panel on the roof of the canopy. This is wired directly into the BCDC.
I also have an Anderson plug installed on the rear bumper, this is also wired into the BCDC. This allows me to connect my 120W folding panel as well when I need extra solar.

I am not very good when it comes to doing electrical work, but if you are it should be easy to do.

I have a regulator on my portable panel and just had a sparkie wire in Anderson plugs to it. When I want to plug it into the BCDC I unplug the regulator and when I want to use it with something that requires a regulator I just plug it back in. Makes things easy and can be used in different situations.

Hope this helps.

I did a similar thing through my Redarc BMS in the van. I started by fitting a six terminal junction plate to the rear of the folding panels. The supply from the panels then goes into this. I then took a supply out through 8 metres of 8 B&S to an anderson plug connection into the van and the BMS. I also took a supply out to the panel regulator and in turn to a 150mm long tail and anderson plug so that my son can use it for various camping applications. Sounds complicated but it's really very simple. I can send you a pic of what I did if you wish.

Cheers .......................... Kev.