Other clauses in the Standard say that ears carried beside the head, close to the cheek, and the tail should ideally be carried high and like a sword (sword tail).

I'm waiting to see what will happen with European poodles. Poodle tails are very high-set, and many would curl forward if they weren't docked. I'm guessing European breeders will select lower-set tails, and selecting for lower tails might bring other changes. One poodle service dog breeder says:

An interesting concept to note is neoteny – the retention of juvenile traits when adults still look and act similar to puppies. Breeds that are considered more child-like tend to share certain physical characteristics, including floppy ears with hardly any cartilage, square bodies and heads, big round eyes, low set and carried tails, soft light-colored hair. Examples of these breeds are Golden Retrievers (mainly show-bred) and Cavalier King Charles Spaniels. These neotenized dogs (whether purebred or mixed) are generally very willing to please, are social, and have “soft” personalities making them ideal service dogs.

As the ears and tails go up, skulls narrow and other traits change, dogs show tendencies of more prey-drive, aggression, and dominance. Other breeds (such as German Shepherd Dogs and Airedale Terriers, for example) are great workers, but they generally need a handler who is always in control and sets clear rules and expectations . . . they are less likely to consistently want to work for someone who may not have good timing for praise, not show physical enthusiasm, or can’t raise their voice above a whisper.

Poodles usually have floppy ears but high tail carriage: in the potential service dog, a lower tail may signify a desirable calmer temperament.

http://web.archive.org/web/20130815013016/http://www.ippgazette.com/Issues/V4-1/ServiceDog.htm