I can only speak from experience of both road and trail riding in all weathers..
It's not actually a simple question to ask...
You might be asking the wrong question..
I would put it this way...
" what is the best way to keep full control of my bike when riding on loose surfaces at low speeds while protecting my hands from trail abuse and the possibility of road rash while at the same time keeping my hands comfortable in all weathers?"
I've tried everything from winter gloves to handlebar mitts...
Winter gloves tend to be thick and not always waterproof or even warm...they reduce the feel and lead to poor throttle and clutch control at low speeds on difficult ground..
They are also difficult to get a tight hang on for dear life grip on the bars...
Bar mitts are great on a road bike but on that occasion where you need to take your hand off the bar grip to adjust your goggles , wipe your visor etc and need to quickly take control again they are cumbersome when on difficult loose ground..
Also if you drop your bike in water they take ages to dry out...
So personally I want my hands to stay warm and dry, be protected from brambles, afford protection if I do fall off at speed and yet give me a good grip on the bars, have good feel for tricky manoeuvring and seal to my jacket to keep draughts out...
I also got tired of catching bramble thorns on my knuckles when pushing through overgrown lanes that are the legacy of the NECR Act...
I now also use a touch screen satnav running os mapping and taking a glove off and putting back on for each screen adjustment is a pain...
My best and so far extremely effective, comfortable and long lasting combo is a good pair of quality enduro gloves with carbon fibre knuckle mouldings and shade leather palms...
TOGETHER WITH
A £5 set of handlebar grip warmers with a hot and warm duel switch... They took 20 mins to fit and work very very well..
I now have full control of the bike while keeping my hands warm and dry..they even dry out gloves while you are riding and make long road sections in frosty weather comfortable again..
So my advice, worth while or not, it to find a really good pair of Enduro gloves with reinforced knuckles and quality palms and fit a pair of bar warmers...you simply won't look back.. I fitted a second pair to my 250 2t...
They feed off standard wiring to the head lamp and back to earth.. The foil backed heat pads simply fit under the bar grips and the switch goes on the side of the headlamp plastic...job done...
This is the basic kit type...get one with three settings, warm-off-hot ..under £5... Mine has lasted three years now...basically the same as the £50 versions...
These are the gloves...
http://www.ebay.co.uk/itm/Knuckle-Prote ... 2a40efed2aAt £10 they are a real bargain....
I cut a slot under the right index finger 1st knuckle so I can slip my finger out to use the touch screen on the sat nav... They go in the washing machine about once a week..still good as new...
Thank you for your very useful post. I ordered a pair of those you've recommended. I also got some Spada Blizzards.