Cloak and Dagger, what's the catch?

Question

Cloak and dagger has 100% generation rate, besides you remain half-invisible even if the cloak is depleted. This looks like it has lots of advantages over Invisibility Watch but not any shortcomings. But there has to be some. Can someone tell me what they are?

And considering these disadvantages what is the best situation to use it instead of regular Invisibility Watch?

Answer 1

A few disadvantages:

1. It has less overall cloak time than the Invisibility Watch if you're running (6.6s vs. 9s).

2. You cannot use ammo boxes or dropped weapons to recharge your cloak; whereas with the Invisibility Watch you can extend your cloak time (or recharge faster) using these items.

Answer 2

The important stats on the three watches are

Invisibility Watch:
9s Cloak Time
Charge time (to full): 33.5s
Recharges 25%, 50%, 100% from small, medium/weapon, and large ammo boxes respectively.
You appear as a team-colored silhouette when an enemy player or weapon hits you.

Cloak and Dagger:
6.6s Cloak Time
Charge time (to full): 15.3s
Recharges while standing still (cloaked).
You appear as a team-colored silhouette when an enemy player or weapon hits you.
Rather than decloaking, you appear as a team-colored silhouette if you move when the meter has run out.

Dead Ringer:
6.5s Cloak Time
Charge time (to full): 16s
Recharges 25%, 40%, 40% from small, medium/weapon, and large ammo boxes respectively.
Does not cloak when activated, but the first time you take damage after activation (right-clicking again before being hit will put it back away).
"Perfect" cloak for the first 6.5s. After that, you appear as a team-colored silhouette when an enemy player or weapon hits you.
Can only be used at 100% cloak.
Decloaking at > 40% cloak remaining reduces cloak meter to 40%.
Louder decloak sound, unless using entire Saharan Spy set.