Training in gliders and tailwheel airplanes will give you skills that some airplane pilots never acquire. Whether those skills will be useful later depends on what you end up flying. Don't know the rules where you live but, in USA, once qualified on tailwheel you need no additional endorsement or rating to fly with the small wheel at the front.
Pros - you'll develop far better stick and rudder skills in tailwheel aircraft
Cons - It will be more challenging and may be harder to find a qualified instructor
I started in gliders, then flew SEL with the wheel at the front, then converted to tailwheel. I had the advantage that the glider time had taught me what my feet were for.