I checked the skills, seeing how most have written their skills (myself included, guilty as charged) most have described a rather high level of expertise in fighting.

Most characters being either masters or experts.

However these clanspeople have reasonable reason to be skilled in bows and hand to hand. They are not described as being ridiculously skilled with weapons. (Like my character, might have gone a bit overboard there, sorry.)
My only pondering is the longsword.
Longsword is a rather noble weapon, as in it's most common for nobles to have it. Historically the weapon starts out as an almost legendary thing to in the late medieval ages being more like a sign of wealth.
Formaroth seems to be in a somewhat 1400-esque setting, meaning the longsword is far from a legendary thing, but historically it's usually the weapon of nobility.

I don't question the longsword per se, i'm just wondering where she got hold of it and if her training with it is more of a regular sword training or if it's more like its two-handed use.
Reading her skills it seems like she uses it with a shield, suggesting she doesn't really use it two-handed. However if one learns a weapon, one can usually use it rather broadly. So if someone would challenge her to a duel, she would do fine using it two-handed. However i assume that shields are a culturally important symbol like for the vikings.
In their duels they would bring 3 shields, the first to have all his shields broken lost the duel.

Seeing that their culture widely uses the bow and shield, i'd guess it's seen as a must have equipment, up to a symbolic piece of equipment. The shield the only thing that really protects a warrior from the skilled archers.

What it boils down to is that a longsword isn't the optimum weapon combined with a shield. It's often more useful to have a slightly shorter blade. However while the longsword is perfectly usable as a one-handed blade. It is still a one and a half handed sword.

I am actually a bit more into the thoughts Ellri brought up.
"They've got more timber than anyone else, but they don't export it.
They've got vast amounts of mineral ores, but they have no large industry for using it.
Then they're famous for their craftsmen and smiths, having some of the best of these in Formaroth."

If that is changed to more of a artisan description, while they don't produce many weapons and artworks, the craftsmen have an impressive artistic skill and little resource waste.
A distinct style of jewelry and decoration, beautiful wood carvings which fetch a hefty sum for collectors because of their exotic nature.
I think that fits in with the forest clan style.

I guess it's a matter of feeling, when the clansmen was described as "They are one of the most skilled smithers in Formaroth. The metalworks that they create are of no equal. From weapons to jewelry, the Legon smithy’s create some of the finest quality goods" one sort of gets the feeling that they have large foundries where they create really awesome weapons, and lots of them.

It could also be just a matter of misunderstanding here. Perhaps the idea was more of the artistic approach.