TypeConverter attribute is ignored by XtraGrid (and probably other DX complex controls)

Consider these classes:
public class Tubo
    {
        private DateTime date;

        public Tubo(DateTime date)
        {
            this.date = date;
        }

        [TypeConverterAttribute(typeof(TuboConverter))]
        public DateTime Date
        {
            get
            {
                return date;
            }
            set
            {
                date = value;
            }
        }
    }

public class TuboConverter: TypeConverter
    {
        public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
        {
            return base.CanConvertFrom(context, sourceType);
        }

        public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
        {
            return base.CanConvertTo(context, destinationType);
        }

        public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
        {
            return base.ConvertFrom(context, culture, value);
        }

        public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
        {
            DateTime x = (DateTime)value;
            return x.AddHours(-1).ToString();
        }
    }

TypeConverter provided as the attribute is never used when I use BindingList<Tubo> as a datasource to XtraGrid. I believe it should be, just like DataGridView does.
Otherwise default .net behaviour is broken and one looses any chance to format the value.

Use provided TypeConverters when fetching values from and out of complex control.