Chimney - Supply air through the basement or through the chimney?

Hello,
we are currently in the final planning phase of our semi-detached house, and we want to place a room-air-independent storage stove in the living room.
So far, the supply air was supposed to come through the chimney (a so-called LAS, air-exhaust system).
The stove installer has now recommended that we instead draw the supply air through a pipe that exits at the bottom of the stove and runs horizontally along the basement ceiling to the outside. The advantages according to him are:

1. It is easier to light the stove because the air does not have to be "sucked down" from above, but comes in horizontally.
2. No cold winter air has to be transported down two floors into the ground floor, which would then cool down the upper rooms. Better to have it go through the basement, which is unoccupied.

The construction company, however, sees this critically because such a pipe on the basement ceiling would become very cold and condensation would form.

My question: Does anyone here have experience with either option? Can such a pipe be insulated well enough to prevent condensation?
Or conversely: Do you have the impression that the rooms through which the chimney runs cool down when the stove is in operation?

I have a two-stream ERLUS Edelkeramik-LAS. Both the room-air-independent gas condensing boiler and the room-air-independent Swedish stove in the living room draw fresh air from above. This works wonderfully and the Swedish stove is also easy to light.

I can only agree with your house building company.

My parents have the second variant with ground-level air intake. The draft is good; whether it is better than with LAS I cannot compare. They do not have problems with condensate, but I myself would also have concerns and will not implement it that way.

We also have Erlus LAS. The chimney is overall rather warm than cold. It is certainly not true that the rooms cool down. It is also supposed to be an advantage that the combustion air in the LAS is preheated.

If you want to light the fireplace, it is usually cold outside and you do not have to "suck down" cold air; it falls down by itself if you let it. So I consider the lighting argument to be unconvincing.