Yes it is annoying the factory will not do both. I asked them and the reply was "Unfortunately over riders and a valance can't be specified together, our choice would be the valance but they both look great!"
So the choice is either take the free Valance or get over riders fitted while the car is built.
I was thinking whether it is possible to get the free valance and then retro fit some Austin Healey over riders which could work out relatively cheap compared to buying Morgan ones and look the same to me. Making the brackets might be hard but the car they are using to advertise the 110 model has spot lights fitted and I was thinking if you ordered those would it give you something else to try attach the over riders.
https://www.ebay.com.au/itm/New-Rear-Chr...e-/171542413458Or order the car with over riders and then go for this
http://www.geoffsshed.net/downundertray.html.While at the Bathurst Morgan Muster I talked to a few people with the down under tray and they said it makes the car much cooler to be in so a really worthwhile upgrade.
Note that if you want to make your own Geoff has a link on that page to how he makes them or Dave W shows you how to make an aluminium one in his great book.
My plan was to talk to Geoff and if his down under tray was still available then probably go for factory over riders and the down under tray. However since then I have been informed I am going to become a grandparent and "she who must always be obeyed" wants us to buy a house to rent to our son and girlfriend meaning I have been told my money can be put to a much better use than ordering a Morgan.