Your concerns are valid. But, the increase in height has made the riding position upright just like sprinter's, there is absolutely no load on shoulders(depends how you grip the handlebar). The slipping part hasnt been tested but this is hardly a race machine, and u havent had any troubles with the new setup handling and braking wise. On the contrary, ride is more controlled now and momentum when braking is much lesser compared to before. Looks wise this suspension looks great and the increase between tyre and mudguard isnt that noticeable.