Streamlight does have the largest portion of the LE market because their "bread and butter" product, the Sl Series has been around longest.
Tigerlight is well rooted in Federal penal system and is making inroads in the local level.
The Tigerlight will still have limited appeal at the local and state level uniformed agencies. The one limitation I foresee is the greater girth of this product that restricts a more secure hold by those with smaller hands.
Having evaluated both versions of the Tigerlight, I can now wholy suggest a refinement on the product in the form of girth reduction for that growing segment of the LE population.
Tigerlight will also necessarily "butt heads" with the deeply ingrained training regimens cornered on indexing on the switch location common to both Streamlight and Maglite products.
I have little doubt that the Tigerlight will flourish. Like Streamlight, it will need to evolve to meet the needs of its core clientele. Streamlight has reacted to those needs with the Ultrastinger, and, particularly, the Stinger HP and XT HP models; the latter of which comprises my current recommendation for general duty application with occasional tactical uses.
In its current iteration, the Surefire 10X is just simply too awkward, fragile, and expensive for "rough and tumble" law enforcement use. It is a prima dona among flashlights and its raison d'être, at least in the context of current law enforcement applications, has not been clearly defined and its charter is, at best, esoteric.