Older rural properties in France tend to have cables in surface mounted conduit as the walls are very thick with un-even brick work and unknown material or consistency.
British homeowners in France tend to want new wiring to be hidden within the wall rather than exposed trunking and with extremely thick and non plastered walls, exposed brick work can be a challenge. There are plenty of great trunking cases which allow me to run the cables neatly and I keep this line with skirtings and door edges wherever possible. The other common resolution is to have a stud wall fitted so there is a cavity in which the cables can run and sockets and switches can be installed flush to the finished surface.
I am working at property at present where the client has requested some new additional wiring to cater for sockets and lighting and kitchen appliances, and has chosen the option of having cables and wires chased into the walls. The pictures above show the chasing out of walls to allow me to run the cable through to sockets and light fittings. Once finished the builders will be able to visit and make good the walls with plaster.
Either finish is a matter of personal taste to the customer, but there are times when chasing a wall is impractical and well installed trunking finish is the best solution. The advantage of trunking is that cables can be added or changed easily at a later date.
The picture here shows a finish with external conduit and to be honest you will struggle to see it. The customer was delighted as she asked where was it, and what an extremely tidy finish it was.