Pros:

+ same as for L4D: good.
+ nice skin.
+ looka good.
+ no problems.

Cons:

- None xD

Conclusion:

Even for L4D2! awesome work again to original author and you for uploading.

Pros:

+ good skin.
+ looks good.
+ won't cause any problems.
+ cool.

Cons:

- None.

Conclusion:

Good for L4D, great work there! No problems so far.